<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <meta charset="UTF-8">
</head>
<body>
<h2>Hello World!</h2>
</body>
<form action="${pageContext.request.contextPath }/sayHello" method="post">
    姓名：<input type="text" name="name"/><br/>
    <input type="submit" value="提交"/>
</form>
</html>
